78 lines
2.4 KiB
Ruby
78 lines
2.4 KiB
Ruby
# frozen_string_literal: true
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module Gitlab
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module Consul
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class Internal
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Error = Class.new(StandardError)
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UnexpectedResponseError = Class.new(Gitlab::Consul::Internal::Error)
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SocketError = Class.new(Gitlab::Consul::Internal::Error)
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SSLError = Class.new(Gitlab::Consul::Internal::Error)
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ECONNREFUSED = Class.new(Gitlab::Consul::Internal::Error)
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class << self
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def api_url
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Gitlab.config.consul.api_url.to_s.presence if Gitlab.config.consul
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rescue Settingslogic::MissingSetting
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Gitlab::AppLogger.error('Consul api_url is not present in config/gitlab.yml')
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nil
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end
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def discover_service(service_name:)
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return unless service_name.present? && api_url
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api_path = URI.join(api_url, '/v1/catalog/service/', URI.encode_www_form_component(service_name)).to_s
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services = json_get(api_path, allow_local_requests: true, open_timeout: 5, read_timeout: 10)
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# Use the first service definition
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service = services&.first
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return unless service
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service_address = service['ServiceAddress'] || service['Address']
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service_port = service['ServicePort']
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[service_address, service_port]
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end
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def discover_prometheus_server_address
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service_address, service_port = discover_service(service_name: 'prometheus')
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return unless service_address && service_port
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"#{service_address}:#{service_port}"
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end
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private
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def json_get(path, options)
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response = get(path, options)
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code = response.try(:code)
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body = response.try(:body)
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raise Consul::Internal::UnexpectedResponseError unless code == 200 && body
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parse_response_body(body)
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end
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def parse_response_body(body)
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Gitlab::Json.parse(body)
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rescue StandardError
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raise Consul::Internal::UnexpectedResponseError
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end
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def get(path, options)
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Gitlab::HTTP.get(path, options)
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rescue ::SocketError
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raise Consul::Internal::SocketError
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rescue OpenSSL::SSL::SSLError
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raise Consul::Internal::SSLError
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rescue Errno::ECONNREFUSED
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raise Consul::Internal::ECONNREFUSED
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rescue StandardError
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raise Consul::Internal::UnexpectedResponseError
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end
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end
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end
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end
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end
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